Bandless roll for beating-engines and like paper-making machines



A. DORMAN. I

BANDLESS RO-LL FOR BEATING ENGINES AND LIKE PAPER MAKING MACHINES.

APPLICATION FILED JAN. 9, 1918.

1,362,606, Patented Dec. 21,1920.

a 4M ATTORNEYJ ,.UNITED STATES PATENT OFFICE,

ALFRED DORMAN, OF PITTSFIELD, .MASSACHUSETTS, ASSIGNOR 'I'O E. D. JONES &

SONS COMPANY, OF PIT TSFIELD, MASSACHUSETTS, A CORPORATION OF MASSA- Cl-IUSETTS.

BANDLESS ROLL FOR BEATING-ENGINES AND LIKE PAPER-MAKING MACHINES.

Specification of Letters Patent.

Application filed January 9, 1918. Serial No. 211,071

T 0 all whom it may concern:

Be it known that I, ALFRED DORMAN, a citizen of the United States, residing at Pittsfield, county of Berkshire, and btate of Massachusetts, have invented certain new and useful Implements in Bandless Rolls for Beating-Engines and like Paper-Making Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

' This invention relates to certain improvements in seating or securing-grinding bars in posit-ionin washing, beating or refining engines and similar machines used inthe manufacture of paper stock, and the invention relates particularly to the positioning of grinding bars in the rolls of engines commonly-known as Jordans, andof that class of Jordan rollsknown in the art as--band-' less rol-ls,'that is, rolls in which no bands are shrunk on or otherwise positioned about the roll for holding the bars in position, this class of rolls having certain advantages over types in which the bars are held in position by bandsshrunk or otherwise secured about the roll. I

1 It is the especial object of the present invention to produce a roll and bar of simple construction, in which the bar may be firmly held in correct grinding position in the roll without the use of bands, and in which each bar may be readily and quickly put in POSI- tion in the roll and removed therefrom without disturbing or taking down the remainder of the roll. v

It is a further object of the invention to produce-'a bar and roll in which the bar is assisted in maintaining its position in the roll by the pressure of the work so that a very rigid and economical construction may be produced.

Wih these and other ob ects not specifically referred to in view, the invention consists in certain novel parts and features of construction which will now be fully described in connection with the accompanyin drawing, in whichi Figure 1 is a side view, partly 1n sectlon showing theinvention as embodied in a roll or plugof a J ordanrefimng engine;

broken away,

ing various methods which may be employed for grouping the bars in the roll.

While the invention iscapable of and intended to be used in various ,paper stock making machines employing grinding or cutting bars or knives, it has been shown and will be described as embodied in the plug or, core of a Jordan engine, and such a plug or core is shown in the drawings. Referrlng to these drawings, the plug or core, which is marked 1, may be of any suitable construc- Patented Dec. 21, 1920.

tion, but in the particular construction illustrated, is, as usual,- a tapered hollow metal .0 linder having an outer surface or rim 2.

his cylinder has formed in its surface 01' rim a plurality of longitudinal grooves 3, between'which are left projecting ridges 4, these grooves affording retaining seats for the grinding bars 5;

In constructions embodying the invention,

the grinding bars are rigidly held in position in the retaining grooves bycooperating fixed locking devices on the bars and support, thus dispensing with the use of bands, and in the best constructions these bars and the surface or, rim of the plug will be so formed that the bars may readily be assembled in the core or plug and held rigidly therein, the bars being partly held in posltion by the pressure of the work. While various constructions may be employed for rigidly seating the bars in the grooves and for permitting a bar to be removed therefrom Without disturbing the other bars, in the. particular construction illustrated the plug is provided with peripheral grooves or slots 6 which intersect at right angles the bar holding or retaining grooves 3 before referred to, and which may be termed positioning grooves or slots. These-peripheral positioning grooves extend around the surface or rim of the core or plug, and are of sufficient dimensions to receive a locking projection formed on the bar and hereinafter referred to. These grooves 6 are widened at one side of their bottoms to form recesses 7, which extend longitudinally of the plug, these recesses extending, as shown, toward the large orldelivery end of the plug. 'By thus forming the grooves, above the recesses 7 there are provided holding or locking vided with suitable locking devices which when the bar is in position willenter the recesses 7 in the grooves 6 and go under the shoulders 8 so that the bar will be firmly held in position in the .roll. While these locking means may be of various characters, for simplicity and cheapness these will be formed by punching the bar to knock out projections or ears 9, which,.as shown, project sidewise from the vertical plane of the bar. In assembling the bars in the roll, the bars are positioned as shown in dotted lines in Fig.4 and dropped into the longitudinal grooves 3, the projections or ears 9 on the bars entering the peripheral grooves 6. The bars are then driven with a suitable tool toward the right of Fig. 1, which causes the projections or ears 9 to enter the recesses '7 and pass under the shoulders '8, and the bars are thus held rigidly in position. As the recesses 7 face in the direction of the course of the work through the machine, the bars are assisted in maintaining their position'by the pressure of the work and a very rigid structure is produced.

- To remove a worn or broken bar from the core or plug, it is merely necessary to drive the bar by means of a suitable tool backward until the projection 9 clears the shoulder 8, whenthe. bar may be pried out. In the best constructions, to allow this to be easily effected, the bars are provided with holes or slots 10cut or punched therein,

these holes or slots being located in the-barso that when the bar is in the core or plug, the slots Wlll come at about the-rim or surface of the roll, so that a suitable tool may be inserted in the slots and have a purchase against the roll surface'for prying out the .bar. 7

bars, may be arranged in the rolls The in various ways, and in various groupings and various lengths of bars. may be employed. As illustrated, for instance, in Fig. 1, there may be a group of bars 11 which extend the length of the roll, these bars being associated with. a group of bars 12 extending but half the-length of the roll, or, if desired, a third group of bars 13, shorter than the bars 12, may be employed with the groups 11 and 12. Two bars may, if desired, be associated in the same longitudinal groove, as shown in Fig. 5, and where such arrangement is adopted, spacers 15 will be provided between thebars. I

If desired, filling blocks or fillers 14, between the bars, may be employed as usual, to effect the proper circulation of the stock through the machine. It will, of course,

be understood that, as usual with Jordans, R

the plug or core shown will cooperate with the usual conical shell (not illustrated).

Each bar will have a suflicient number of ears or projections 9 to eifect a firm and rigid seating of the bars, and preferably and as shown, each bar will have at least two such projections, and there will be' corresponding peripheral grooves 6 in the core. In the construction shown, where the bars are of different lengths, a suflicient number of peripheral grooves will be provided to effect this. i i 1 It will be seen from the construction eflicient construction has been provided for seating grinding bars in their carriers or V support without the necessity of removing other bars, and in which the use of bands, which have to be shrunk or otherwise seshown and described that a very simple and cured in position, are avoided. Further-' more, a very rigid construction is rovided', and one which is very durable. hile the invention has been shown and described in its preferred form,-it will be understood that certain variations from the precise form of supporting bars may be made, and such bars may be used with. different supports or carriers without departing from the invention.

What is claimed is:

1. In a machine of the class described, the combination with a tapered grinding bar supporting cylinder, of longitudinally supporting grooves cut in the cylinder wall, peripheral grooves cut in the cylinder wall at right angles to the longitudinal grooves, undercuts formed in the walls of the peripheral grooves extending toward the large end of the cylinder, the end walls of the undercuts forming abutments, and grindingbars having spaced locking projections punchedout sidewise of the bar, said locking projections taking into the undercuts nd abutting against the end walls of the undercuts toward the large end of the cylinder the bar being moved to looking or unlocking position. longitudinally of the cylinder and held against the abutments from endwise displacement by the pressure of the work through the achine,

' 2. In a machine of the class described, the combination of a grinding bar support having longitudinal bar length supporting, grooves, and locking shoulders adjacent the projections seating under the shou ers, an

lifting notches located in the bar so as to be close to the surface of the support when the bar is in position. I

8. A grinding bar or knife for beating and the like paper making machines, having spaced locking projections extending sidewise from the vertical plane of the bar, and lifting slots above the projections.

4. In a machine of the class described, in

combination of the grinding bar support, of

for locking thebars in position thereon, and means on the bars by which they may be lifted from the grooves,

5. A grinding bar or knife for beating and the like paper making machines having lock-v In testimony whereof, I have hereunto set:

my hand.

' ALFRED DORMAN. 

